Mathematics (NDA/NA SOLVED PAPER 2019 (I) (51 to 100)

Total Questions: 50

31. Find the answer of given equation?

Correct Answer: (a)
Solution:

32. Simplify the equation?

Correct Answer: (b) 2 (√2 -1)
Solution:

33. If y = a cos 2x + b sin2x, then:

Correct Answer: (d)
Solution:

34. A given quantity of metal is to be cast into a half cylinder (i.e. with a rectangular base and semicircular ends). If the total surface area is to be minimum, then the ratio of the height of the half cylinder to the diameter of the semicircular ends is:

Correct Answer: (a) π : (π + 2)
Solution:

35. Find the answer of given question?

Correct Answer: (b) e − 1
Solution:

36. Find the answer of given equation?

Correct Answer: (d)
Solution:

37. Simplify the equation?

Correct Answer: (a)
Solution:

38. The minimum distance from the point (4, 2) to y² = 8x is equal to?

Correct Answer: (b) 2√2
Solution:

39. The differential equation of the system of circles touching the Y - axis at the origin is:

Correct Answer: (c)
Solution:

40. Simplify the question?

Correct Answer: (c) Both 1 and 2
Solution:

The order of highest order derivative occuring in the differential equation is 2 and its degree is 1.